Mechanical characteristics and stability analysis of surrounding rock reinforcement in rectangular roadway.

ABSTRACT: The stability of surrounding rock with bolt support depends on the stability within the reinforcement range. To understand the reinforcing mechanism of a rectangular roadway bolt fully and accurately, a quantitative method for evaluating the stability of the surrounding rock of a rectangular roadway must be developed. First, a roof beam model of a rectangular tunnel is established according to the deformation law of surrounding rock. Based on the elastic-plastic theory, the deflection calculation formula can be derived, and the ultimate load of the roof beam can be obtained under the plastic state without support. Second, based on the reinforcement effect of bolts, a model of a surrounding rock reinforcement body is established, the physical and mechanical properties of this body are deduc

SUBMITTER: Gu SC 

PROVIDER: S-EPMC9789071 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature